//
//===----------------------------------------------------------------------===//
-#ifndef LLVM_RUNTIME_DYLD_MACHO_H
-#define LLVM_RUNTIME_DYLD_MACHO_H
+#ifndef LLVM_LIB_EXECUTIONENGINE_RUNTIMEDYLD_RUNTIMEDYLDMACHO_H
+#define LLVM_LIB_EXECUTIONENGINE_RUNTIMEDYLD_RUNTIMEDYLDMACHO_H
-#include "ObjectImageCommon.h"
#include "RuntimeDyldImpl.h"
#include "llvm/Object/MachO.h"
#include "llvm/Support/Format.h"
: EHFrameSID(RTDYLD_INVALID_SECTION_ID),
TextSID(RTDYLD_INVALID_SECTION_ID),
ExceptTabSID(RTDYLD_INVALID_SECTION_ID) {}
+
EHFrameRelatedSections(SID EH, SID T, SID Ex)
: EHFrameSID(EH), TextSID(T), ExceptTabSID(Ex) {}
SID EHFrameSID;
RuntimeDyldMachO(RTDyldMemoryManager *mm) : RuntimeDyldImpl(mm) {}
- /// Extract the addend encoded in the instruction.
- int64_t decodeAddend(uint8_t *LocalAddress, unsigned NumBytes,
- uint32_t RelType) const;
+ /// This convenience method uses memcpy to extract a contiguous addend (the
+ /// addend size and offset are taken from the corresponding fields of the RE).
+ int64_t memcpyAddend(const RelocationEntry &RE) const;
+
+ /// Given a relocation_iterator for a non-scattered relocation, construct a
+ /// RelocationEntry and fill in the common fields. The 'Addend' field is *not*
+ /// filled in, since immediate encodings are highly target/opcode specific.
+ /// For targets/opcodes with simple, contiguous immediates (e.g. X86) the
+ /// memcpyAddend method can be used to read the immediate.
+ RelocationEntry getRelocationEntry(unsigned SectionID,
+ const ObjectFile &BaseTObj,
+ const relocation_iterator &RI) const {
+ const MachOObjectFile &Obj =
+ static_cast<const MachOObjectFile &>(BaseTObj);
+ MachO::any_relocation_info RelInfo =
+ Obj.getRelocation(RI->getRawDataRefImpl());
+
+ bool IsPCRel = Obj.getAnyRelocationPCRel(RelInfo);
+ unsigned Size = Obj.getAnyRelocationLength(RelInfo);
+ uint64_t Offset;
+ RI->getOffset(Offset);
+ MachO::RelocationInfoType RelType =
+ static_cast<MachO::RelocationInfoType>(Obj.getAnyRelocationType(RelInfo));
+
+ return RelocationEntry(SectionID, Offset, RelType, 0, IsPCRel, Size);
+ }
/// Construct a RelocationValueRef representing the relocation target.
/// For Symbols in known sections, this will return a RelocationValueRef
/// In both cases the Addend field is *NOT* fixed up to be PC-relative. That
/// should be done by the caller where appropriate by calling makePCRel on
/// the RelocationValueRef.
- RelocationValueRef getRelocationValueRef(ObjectImage &ObjImg,
+ RelocationValueRef getRelocationValueRef(const ObjectFile &BaseTObj,
const relocation_iterator &RI,
const RelocationEntry &RE,
- ObjSectionToIDMap &ObjSectionToID,
- const SymbolTableMap &Symbols);
+ ObjSectionToIDMap &ObjSectionToID);
/// Make the RelocationValueRef addend PC-relative.
- void makeValueAddendPCRel(RelocationValueRef &Value, ObjectImage &ObjImg,
- const relocation_iterator &RI);
+ void makeValueAddendPCRel(RelocationValueRef &Value,
+ const ObjectFile &BaseTObj,
+ const relocation_iterator &RI,
+ unsigned OffsetToNextPC);
/// Dump information about the relocation entry (RE) and resolved value.
void dumpRelocationToResolve(const RelocationEntry &RE, uint64_t Value) const;
-public:
- /// Create an ObjectImage from the given ObjectBuffer.
- static ObjectImage *createObjectImage(ObjectBuffer *InputBuffer) {
- return new ObjectImageCommon(InputBuffer);
- }
+ // Return a section iterator for the section containing the given address.
+ static section_iterator getSectionByAddress(const MachOObjectFile &Obj,
+ uint64_t Addr);
- /// Create an ObjectImage from the given ObjectFile.
- static ObjectImage *
- createObjectImageFromFile(std::unique_ptr<object::ObjectFile> InputObject) {
- return new ObjectImageCommon(std::move(InputObject));
- }
+
+ // Populate __pointers section.
+ void populateIndirectSymbolPointersSection(const MachOObjectFile &Obj,
+ const SectionRef &PTSection,
+ unsigned PTSectionID);
+
+public:
/// Create a RuntimeDyldMachO instance for the given target architecture.
static std::unique_ptr<RuntimeDyldMachO> create(Triple::ArchType Arch,
RTDyldMemoryManager *mm);
- /// Write the least significant 'Size' bytes in 'Value' out at the address
- /// pointed to by Addr. Check for overflow.
- bool writeBytesUnaligned(uint8_t *Addr, uint64_t Value, unsigned Size);
+ std::unique_ptr<RuntimeDyld::LoadedObjectInfo>
+ loadObject(const object::ObjectFile &O) override;
SectionEntry &getSection(unsigned SectionID) { return Sections[SectionID]; }
- bool isCompatibleFormat(const ObjectBuffer *Buffer) const override;
- bool isCompatibleFile(const object::ObjectFile *Obj) const override;
- void registerEHFrames() override;
+ bool isCompatibleFile(const object::ObjectFile &Obj) const override;
};
/// RuntimeDyldMachOTarget - Templated base class for generic MachO linker
Impl &impl() { return static_cast<Impl &>(*this); }
const Impl &impl() const { return static_cast<const Impl &>(*this); }
-protected:
-
- /// Parse the given relocation, which must be a non-scattered, and
- /// return a RelocationEntry representing the information. The 'Addend' field
- /// will contain the unmodified instruction immediate.
- RelocationEntry getBasicRelocationEntry(unsigned SectionID,
- ObjectImage &ObjImg,
- const relocation_iterator &RI) const {
- const MachOObjectFile &Obj =
- static_cast<const MachOObjectFile &>(*ObjImg.getObjectFile());
- MachO::any_relocation_info RelInfo =
- Obj.getRelocation(RI->getRawDataRefImpl());
-
- const SectionEntry &Section = Sections[SectionID];
- bool IsPCRel = Obj.getAnyRelocationPCRel(RelInfo);
- unsigned Size = Obj.getAnyRelocationLength(RelInfo);
- uint64_t Offset;
- RI->getOffset(Offset);
- uint8_t *LocalAddress = Section.Address + Offset;
- unsigned NumBytes = 1 << Size;
- uint32_t RelType = Obj.getAnyRelocationType(RelInfo);
- int64_t Addend = impl().decodeAddend(LocalAddress, NumBytes, RelType);
-
- return RelocationEntry(SectionID, Offset, RelType, Addend, IsPCRel, Size);
- }
+ unsigned char *processFDE(unsigned char *P, int64_t DeltaForText,
+ int64_t DeltaForEH);
public:
RuntimeDyldMachOCRTPBase(RTDyldMemoryManager *mm) : RuntimeDyldMachO(mm) {}
- void finalizeLoad(ObjectImage &ObjImg, ObjSectionToIDMap &SectionMap) {
- unsigned EHFrameSID = RTDYLD_INVALID_SECTION_ID;
- unsigned TextSID = RTDYLD_INVALID_SECTION_ID;
- unsigned ExceptTabSID = RTDYLD_INVALID_SECTION_ID;
- ObjSectionToIDMap::iterator i, e;
-
- for (i = SectionMap.begin(), e = SectionMap.end(); i != e; ++i) {
- const SectionRef &Section = i->first;
- StringRef Name;
- Section.getName(Name);
- if (Name == "__eh_frame")
- EHFrameSID = i->second;
- else if (Name == "__text")
- TextSID = i->second;
- else if (Name == "__gcc_except_tab")
- ExceptTabSID = i->second;
- else
- impl().finalizeSection(ObjImg, i->second, Section);
- }
- UnregisteredEHFrameSections.push_back(
- EHFrameRelatedSections(EHFrameSID, TextSID, ExceptTabSID));
- }
+ void finalizeLoad(const ObjectFile &Obj,
+ ObjSectionToIDMap &SectionMap) override;
+ void registerEHFrames() override;
};
} // end namespace llvm
projects / oota-llvm.git / blobdiff